Immanants of Totally Positive Matrices are Nonnegative
John R. Stembridge · Bulletin of the London Mathematical Society · 1991
Let Mn{k) denote the algebra of n x n matrices over some field k of characteristic zero. For each A>valued function / on the symmetric group Sn, we may define a corresponding matrix function on Mn(k) in which (fljji— •> X \\ w)&i (i)' " a () ' (U